Process for the preparation of polyols based on renewable FEEDSTOCK

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to improved method of obtaining polyols, which includes the following stages: a) oxidation of unsaturated natural fats, unsaturated natural fatty acids and/or esters of fatty acids with dinitrogen oxide; b) interaction of the product, obtained at stage a), with hydrating reagent in presence of catalyst, which contains, at least, one transition metal from groups from 6 to 11; c) interaction of the reaction product from stage b) with alkylene oxides in presence of multimetalcyanide catalyst. Invention also relates to method of obtaining polyurethanes, which includes oxidation of unsaturated natural fats, unsaturated natural fatty acids and/or esters of fatty acids with dinitrogen oxide, interaction of the obtained product with hydrating reagent in presence of catalyst, which contains, at least, one transition metal from groups from 6 to 11, interaction of the reaction product with alkylene oxides in presence of multimetalcyanide catalyst with obtaining polyols, interaction of polyisocyanates with polyols as compounds, which have two hydrogen atoms, reactionable with respect to isocyanate groups.;EFFECT: simple methods make it possible to obtain wide spectrum of products without application of expensive initial reagents.;10 cl, 8 ex